Library not loaded: /usr/local/lib/libquadmath.0.dylib

On Sep 3, 2014, at 4:18 AM, Xiao He <praguewatermelon at gmail.com> wrote:

Hi all,

I tried to load a package which includes a shared object on one of my

Macs,

and I got an error message below, which suggests that the file "
libquadmath.0.dylib" is missing in the /usr/local/lib folder. On my other
Mac however, I have no problem loading the package, and the file "
libquadmath.0.dylib" is in the /usr/local/lib folder. I wonder where this
libquadmath.0.dylib file is from, and how I can install it on the

computer

where it is missing. Thanks!

libquadmath is part of the Fortran compiler, it is not a standard library,
so it will be only present if you install the compiler.

Note that the Mavericks build of R on CRAN also ships with the quadmath
library and Mavericks CRAN package binaries use it from there. If you
compile a package yourself and want others to be able to use it, you may
want to change the path from /usr/local/lib/libquadmath.0.dylib to
/Library/Frameworks/R.framework/Versions/3.1/Resources/lib/libquadmath.0.dylib
via install_name_tool --- the same goes for libgfortran.3.dylib.

Cheers,
Simon

library(WRScpp)
Error in dyn.load(file, DLLpath = DLLpath, ...) :
 unable to load shared object

'/Library/Frameworks/R.framework/Versions/3.1/Resources/library/WRScpp/libs/WRScpp.so':

dlopen(/Library/Frameworks/R.framework/Versions/3.1/Resources/library/WRScpp/libs/WRScpp.so,

6): Library not loaded: /usr/local/lib/libquadmath.0.dylib
 Referenced from:

/Library/Frameworks/R.framework/Versions/3.1/Resources/library/WRScpp/libs/WRScpp.so

 Reason: image not found
Error: package or namespace load failed for ?WRScpp??

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